# dxLink21 vs Belimo Assistant 2

The clearest difference is update cadence: Belimo Assistant 2 at every 5 weeks against dxLink21's every 3 months. dxLink21's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

dxLink21 ships an update every 3 months, Belimo Assistant 2 every 5 weeks. The most recent releases landed on September 1, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | dxLink21 | Belimo Assistant 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.4 (10 ratings)](https://appshunter.io/ios/app/belimo-assistant-2/id6475810004/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | — | Free |
| Size | 134 MB | 122 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Belparts NV](https://appshunter.io/developer/1470365988) | [BELIMO Automation AG](https://appshunter.io/developer/1149281298) |

## What reviewers say

### dxLink21

[App page](https://appshunter.io/ios/app/dxlink21/id1470365989)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Belimo Assistant 2

[App page](https://appshunter.io/ios/app/belimo-assistant-2/id6475810004)

This app allows for the setup, operation, and troubleshooting of Belimo devices like actuators and valves using a smartphone or tablet. It offers features for checking parameters, monitoring device status, and generating reports.

**Highlights:** Device parameter modification, Identification data display, MP-Bus, BACnet, Modbus addressing, Guided parameter setup, Configuration copy/paste, Live trending and local override, Device health and operation monitoring, Digital report generation

**In-app purchases:** none


## Frequently asked questions

### Is dxLink21 free?

dxLink21 is free to download, with no in-app purchases.

### Is Belimo Assistant 2 free?

Belimo Assistant 2 is free to download, with no in-app purchases.

### Do dxLink21 or Belimo Assistant 2 have ads?

Neither dxLink21 nor Belimo Assistant 2 shows ads.

### Which is updated more often, dxLink21 or Belimo Assistant 2?

dxLink21 ships an update every 3 months, and Belimo Assistant 2 every 5 weeks. Most recently, dxLink21 was updated on September 1, 2026 and Belimo Assistant 2 on September 16, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*